What is safe to take for occasional anxiety and sleepness nights while pregnant!??

I just found out im pregnant, 5 weeks and i had trouble sleeping last night, and some anxiety!!! Before i was pregnant i took seredyn, occasionally, which is natural, now i cannot take this until I talk to my doctor!!! But they are closed this weekend!!
 Anyone taking anything for anxiety while pregnant, and is really safe and doctor approved!?? Let me know, anything for sleep!??? That is doctor approved!?? I would like to know